In the study of electric potential, we often come across the term 'equipotential surfaces.' These surfaces are imaginary surfaces within an electric field that have the same electric potential at all points. In simpler terms, if we were to place a positive charge on any point of an equipotential surface, it would experience no net force and would thus remain at rest.

To visualize equipotential surfaces, let's consider a scenario where we have a positive point charge at the origin. The electric field lines, which represent the direction and strength of the electric field, will radiate outward from the charge. The equipotential surfaces, on the other hand, will be perpendicular to the electric field lines. This implies that the electric field and the equipotential surfaces are always perpendicular to each other.